Cylinder-cock.



W. R. ATKINS.

CYLINDER COCK.

APPLICATION FILED sEPL. 1915.

LQSLCQQ. Patented July 1917.

WILLIAM R. ATKINS, 0F ROANOKE, VIRGINIA.

CYLINDER-cock.

Specicaton of Letters Patent.

Patented July 3, i917.

Application iled September 5, 1916. Serial No. 118,454.

T0 all whom t may concern.'

Be it known that I, WILLIAM R. ATKrNs, a citizen of the United States, residing at Roanoke, in the county of Roanoke and State of Virginia, have invented certain new and useful Improvements in Cylinder- Cocks, of which the following is a specili-V cation.

My invention relates to a new and useful improvement in cylinder cocks and has for its object to provide an arrangement whereby the condensed water in the cylinder and the steam may be blown into the main exhaust and out through the stack, or the cocks may be so piped as to exhaust in a convenient place under the tender, rather than out at the sides of the cylinders which is the common practice at this time. Among the disadvantages of blowing the water and steam out at the side of the cylders is that it often obstructs the view of the engineer and wets or burns people at the side of the engine.

An object of my invention is to provide a drain cock that is exceedingly simple in construction, having but Afew parts, and the valve therein'formed of one part and so arranged as to allow a maximum amount of water and steam to escape therefrom when opened and at the same time accurately keep the valve on its seat.

Still another object of my invention is to provide an arrangement as above stated that may be readilyV placed on the cylinders now in use and may be easily connected with the central or main exhaust port.

Still another object of my invention is to produce a cylinder cock, the body of which may be easily castV in one integral piece, thereby affording a cheap and elli cient article.

Still other objects of my invention are to produce an arrangement as above described, that will be neat in appearance, easily placed in position, easily removed if so desired, and positive at all times in its action.

With these and other objects in view my inventionconsistsin certain new and novel constructions and combination' of parts as will be hereinafter more fully described and pointed'out in the claim.

In the-drawings forming a part hereof Figure l isl a side velevation of a portion of a locomotive showing the cylinder cocks in place and 'piped` to the main exhaust.

Fig. 2 is asectional view showing the cyl inder cocks in place and a portion of the pipe leading to the main exhaust.

Fig. 3 is a sectional view of the improved cock and Fig. '4 is a side elevation of the same but turned at right angles to the position shown in Fig. 3.

Fig. 5 is a side elevation ol the improved valve.

Fig. 6 is a top plan thereof.

Fig. 7 is a front view showing the drain cock and the L connection.

It will be understood that my improved arrangement is secured to the cylinders on both sides oil the engine and a description of one will be a description of both.

Referring now to F ig. l, a portion of a locomotive is shown provided with the cylinders l, which may be of any of the preferred type.

Located at the bottom of the cylinder are placed the two drain cocks 2 and 3.

A pipe 4l is shown, which connects with a T joint 5 which T is connected with the drain cock 2 and to the opposite end of the T is joined the pipe 6 which connects with an elbow 7 which elbow is also threaded to an opening in the drain cock'.

The pipe l is in turn connected with the main exhaust 8.

In Fig. l it is shown as connected with the exhaust 8 which is shown in dotted lines, as it will be understood that the exhaust on different cylinders may be in diderent positions.

It will be understood however that regardless of what the arrangement of the main exhaust and its position may be, the pipe is Vdesigned either to connect therewith so that the condensed water and steam will be blown out through the main exhaust and through the stack, or if so desired at any desirable place back of the engine or of the tender.

In the drawings as in Fig. 1 I have shown it connected with the main exhaust, but it v may be readily understood that the pipe 4L may extend back and beneath the engine if so desired.

Extending through a slot 7 in the fon .i I

ward cock 2 and through a slot 8 in the rearward one 3 is an operating rod 9 which in turn is connected at its rear end to a farther rod 11, the rear end of said rod connecting with an arm l2 of a piston-which operates in a cylinder 13.

Leading from the said cylinder is a pipe 14 which leads'directly from the cab of the locomotive. Any preferable arrangement may be used for injecting steam into the cylinder 13 to force the rod 11 and the lever 9 forwardly and rearwardly.

lt will be seen that this rod 9 has the cutout portions 15 and 16 and when these cutout portions are in their normal positions in the cocks 2 and 3, the valves therein, to be hereinafter explained, remained seated, but a movement of the rod 9 forces the shoulders of the cutout portions against the valves to raise them off their seats.

Taking up now the explanation of the cock 2 it will be seen that there is an integral body or casing having an opening 17 in the top thereof which is threaded for the reception of a nipple 18, this nipple is also threaded externally, its entire length and screws within the opening 17 of the body portion.

This nipple 1S is also provided with an opening in the top thereof 19 and the inner portion of said nipple is cut away to form a pocket for the reception of a spring 20.

The opening 21 is also formed in the body portion of slightly less diameter than the opening 17 and the lower portion of said opening is provided with a valve seat 22, the body portion of the cock extends inwardly as at 23 to form a relatively thick surface at this valve seat so that the saine is reinforced at this point so that the same may be ground a number of times without in any way weakening the said casing.

Below this valve seat is an elongated opening 24 which permits the water and steam to rush around the stem of the valve proper and allowing a maximum amount of water and steam to escape around the same'.

Connected with this elongated opening 211 is the circular opening- 25 in which is threaded the T. The lower portion of the valve body is provided with cylindrical opening` 25 which may be left open at its lower end, the upper portion thereof extending into the opening 24. y

Located centrally of the lower portion is the slot 7 above mentioned through which passes the operating rod 9.

The description of the cock 2 applies to the cock 3 with the exception that in this instance instead of having a T connected therewith it only calls for any L.

Referring now to the valve proper which forms a material part of the invention it will be seen from Figs. 3, 5, and G that the same is made up of a stem 27 and a piston 2S at the lower portion thereof, this piston 28 fitting within the opening 25 of the body 2 and itis to be of course understood that a valve of this description fits within both of the cocks 2 and`3. The length of the stem 27, and the piston portion 28 is such that it always remains within the opening 25; that 1s even when forced to its most upward position, so that little or no water or steam will be allowed to escape through the opening 25 into the atmosphere. At the upper portion of the stem 27 is the valve 28 which is reinforced as at 29.

Formed integrally with this upper portion 29 are the guides 30 which are adapted to Contact with the inner walls of the opening 21 in the valve body, so that the said valve will always be in a vertical position and the valve 2S always properly positioned with relation to the valve seat in the body 22, and even if there be any uneven pressure exerted by the spring 20 the guides 30 will always hold the valve and valve seat in correct alinement.

lt will be noticed that above the guides 30 are right angularly positioned fins 31 that are adapted to it within the opening between the coils of the spring so as to always tend to keep the said spring 20 in a correctly alined and vertical position.

It will be noticed that there is plenty of space at the sides of the guides to permit the water and steam to rush past the guides the valves willbe kept in perfect alinement Y only necessitating a grinding of the valve 28 and the valve seat 22 at long intervals.

If soy desired a check valve 32 may be placed in the pipe 6 so that the water or condensed steam may flow through the rear cock into the pipe 6' in a forward direction and so that any pressure of the condensed water or steam from the forward cock would be effectivelyV checked in the pipe 6 by the said check Vvalve 32. l A description of the operation is as fol'- ows:--

Supposing the engine has been idling or has stopped and the water has condensed in the cylinder and it is to be desired' to remove the same. Y Y

The engineer opens a valve, V(not shown) permitting steam to enter throughthe pipe 14 into the cylinder 13. The same through the` connection 11 forces the rod 9 forwardly and the raised portions on the rods, will contact with the lower portion of the` piston 28 of the valves in both the cocks 2 and 3. This will raise the valve 28 oli' the seat 22 allowing the condensed water Vand steam to this pipe 6 passing right through the T 5, pipe 4 and the main exhaust 8 through the stack.

The water and steam from the forward eock 2 also passes through the opening in the nipple between the valve 28 and valve seat 22 and as there is pressure in the pipe 6 it will pass directly out through the forward part of the T into the exhaust pipe 4: and main exhaust 8.

It will be noticed that both cocks are opened simultaneously and therefore there will be but little pressure in the pipe 6 from the forward oook and what pressure there might be will be eeotively checked by the aforementioned check valve 32.

From the above it will be seen that no water or steam is ever blown out at the side of the cylinders but always into the main exhaust, that the cooks are extremely simple in operation, and that the valves are always kept in correct alinement.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is A plurality of cooks secured to the drainports of a cylinder, a rod extending through openings in the lower portions of said cooks, valves within said cooks, the body portion of each cook being provided with a cylindrical opening communicating at its lower end with the outside air, the upper end of said opening communicating with an enlarged opening, a pipe-connection between said cooks communicating with said enlarged openings, each body-portion extending inwardly intermediate of said enlarged opening and the upper portion of the bore of the body-portion, a valve-seat formed by the resultant inward extension, valves proper positioned within said bodyportion, each valve being adapted to seat upon said seat-forming extension, the stern thereof having its lower end terminating in a piston positioned to move intermediate said cylindrical opening and said enlarged opening, the upper end of each valve having an upwardly extending guide arranged for movement within the bore, above the valve, said guide being of frame-like form, an inlet applied to the upper end of said body portion and connecting with the exhaust drain port, and a resilient member interposed between the upper end of said guide and said nozzle.

In testimony whereofI aiix my signature.

WILLIAM R. ATKINS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

